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Oct 19, 2009 at 5:05 comment added Theo Johnson-Freyd But lots of math is done because someone thinks "oh, hey, this problem is cool"
Oct 18, 2009 at 23:16 answer added Michael Lugo timeline score: 0
Oct 18, 2009 at 23:12 vote accept Harrison Brown
Oct 18, 2009 at 23:01 comment added Harrison Brown @Noah: I think what I meant by "recreational" was that it didn't arise so much from Serious Thinking about a Serious Problem as from saying "oh, hey, this problem's cool!"
Oct 18, 2009 at 23:00 comment added Noah Snyder This seems like a perfectly reasonable question to me. It's not particularly "recreational." I wouldn't worry so much about defending your question.
Oct 18, 2009 at 22:54 history edited Harrison Brown CC BY-SA 2.5
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Oct 18, 2009 at 22:45 answer added David Eppstein timeline score: 6
Oct 18, 2009 at 22:39 history asked Harrison Brown CC BY-SA 2.5